package cn.iocoder.yudao.module.crossborder.finance.service.impl;

import cn.iocoder.yudao.module.crossborder.finance.api.dto.ExchangeRateDTO;
import cn.iocoder.yudao.module.crossborder.finance.api.dto.SettlementDTO;
import cn.iocoder.yudao.module.crossborder.finance.service.FinanceService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

/**
 * 财务结算管理 Service 实现类
 *
 * @author LHL
 */
@Service
@Slf4j
public class FinanceServiceImpl implements FinanceService {

    @Override
    public SettlementDTO getSettlement(Long id) {
        log.info("获取财务结算记录，id: {}", id);
        
        // TODO: 实际实现中应该从数据库查询
        SettlementDTO dto = new SettlementDTO();
        dto.setId(id);
        dto.setOrderId(1001L);
        dto.setSettlementType(1);
        dto.setStatus(1);
        dto.setOriginalAmount(new BigDecimal("1000.00"));
        dto.setOriginalCurrency("USD");
        dto.setSettlementAmount(new BigDecimal("6800.00"));
        dto.setSettlementCurrency("CNY");
        dto.setExchangeRate(new BigDecimal("6.8"));
        dto.setFee(new BigDecimal("10.00"));
        dto.setTax(new BigDecimal("68.00"));
        dto.setActualAmount(new BigDecimal("6722.00"));
        dto.setSettlementCycle(7);
        dto.setSettlementAccount("6222021234567890");
        dto.setSettlementBank("中国银行");
        dto.setSettlementTime(LocalDateTime.now());
        dto.setCompletedTime(LocalDateTime.now());
        dto.setRemark("正常结算");
        dto.setCreateTime(LocalDateTime.now());
        dto.setUpdateTime(LocalDateTime.now());
        
        return dto;
    }

    @Override
    public List<SettlementDTO> getSettlementList(List<Long> ids) {
        log.info("获取财务结算记录列表，ids: {}", ids);
        
        List<SettlementDTO> result = new ArrayList<>();
        for (Long id : ids) {
            result.add(getSettlement(id));
        }
        return result;
    }

    @Override
    public Long createSettlement(SettlementDTO settlement) {
        log.info("创建财务结算记录，orderId: {}, amount: {}", 
                settlement.getOrderId(), settlement.getOriginalAmount());
        
        // TODO: 实际实现中应该保存到数据库
        Long id = System.currentTimeMillis(); // 模拟生成ID
        settlement.setId(id);
        settlement.setCreateTime(LocalDateTime.now());
        settlement.setUpdateTime(LocalDateTime.now());
        
        return id;
    }

    @Override
    public ExchangeRateDTO getExchangeRate(String fromCurrency, String toCurrency) {
        log.info("获取汇率，fromCurrency: {}, toCurrency: {}", fromCurrency, toCurrency);
        
        // TODO: 实际实现中应该从汇率服务或数据库获取
        ExchangeRateDTO dto = new ExchangeRateDTO();
        dto.setId(1L);
        dto.setFromCurrency(fromCurrency);
        dto.setToCurrency(toCurrency);
        dto.setRate(new BigDecimal("6.8"));
        dto.setRateType(1);
        dto.setBuyRate(new BigDecimal("6.79"));
        dto.setSellRate(new BigDecimal("6.81"));
        dto.setMiddleRate(new BigDecimal("6.80"));
        dto.setSource("央行");
        dto.setEffectiveTime(LocalDateTime.now());
        dto.setExpireTime(LocalDateTime.now().plusDays(1));
        dto.setEnabled(true);
        dto.setRemark("实时汇率");
        dto.setCreateTime(LocalDateTime.now());
        dto.setUpdateTime(LocalDateTime.now());
        
        return dto;
    }

    @Override
    public BigDecimal calculateFee(Long orderId, Integer feeType) {
        log.info("计算费用，orderId: {}, feeType: {}", orderId, feeType);
        
        // TODO: 实际实现中应该根据费用规则计算
        // 这里简单返回固定费用作为示例
        switch (feeType) {
            case 1: // 手续费
                return new BigDecimal("10.00");
            case 2: // 税费
                return new BigDecimal("68.00");
            case 3: // 其他费用
                return new BigDecimal("5.00");
            default:
                return BigDecimal.ZERO;
        }
    }

    @Override
    public Boolean processSettlement(Long orderId) {
        log.info("处理结算，orderId: {}", orderId);
        
        // TODO: 实际实现中应该执行结算流程
        // 1. 获取订单信息
        // 2. 计算结算金额
        // 3. 创建结算记录
        // 4. 执行资金转移
        // 5. 更新结算状态
        
        return true;
    }

}
